@font-face {
  font-family: 'OPPOSans';
  src: url(../assets/Font-OPPOSans/OPPOSans-B.ttf);
  src: url(../assets/Font-OPPOSans/OPPOSans-H.ttf);
  src: url(../assets/Font-OPPOSans/OPPOSans-L.ttf);
  src: url(../assets/Font-OPPOSans/OPPOSans-M.ttf);
  src: url(../assets/Font-OPPOSans/OPPOSans-R.ttf);
  font-weight: 100;
}